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Royal Building Products 9/16-in x 3-1/4-in x 8-ft Colonial Finished PVC WM623 Baseboard Moulding

Name: Royal Building Products 9/16-in x 3-1/4-in x 8-ft Colonial Finished PVC WM623 Baseboard Moulding
Brand: Royal Building Products
SKU: 5016092625
Rating: 4.8 (158 reviews)

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4.8

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Royal 100% cellular PVC mouldings do way more than decorate. They insulate, protect, and turn front porches into a center of neighborhood activity. They ramp up the curb appeal of any window, eave, or doorway. Whether in a bathroom, basement, or garage, a stylish worry-free alternative to wood anywhere moisture is a concern inside your home. The decision to install Royal PVC moulding is easy. Knot and defect free means no waste. Your or your contractors save time and labor because they come ready to install. Used in your home or out, the lifetime never rot, moisture and termite proof material will give you peace of mind for as long as you are in your home. Your summer weekends are saved from painting and maintenance.

Royal WM623 profile baseboard moulding is proudly made in the USA from 100% white PVC, rot free and resistant to moisture and insect damage
Finished white surface is ready to be installed or can be painted the color of your choice with 100% acrylic latex paint, even dark colors(consult installation guide for specifics)
Each piece has dimensions of 9/16-in thick x 3-1/4-in wide x 8-ft long
Baseboard trim and moulding is a key component that gives your room a finished look and creates a seamless transition between your walls and floors, decoratively hiding gaps, as well as protecting your walls from damage
Limited lifetime warranty provides peace of mind, low maintenance and worry free, does not promote mold or mildew growth
Use with Royal’s full line of moulding, trim, and boards to complete your project
Saves time and labor with superior nailing and gluing, consistent PVC substrate reduces waste with no knots or defects, will not split or crack
Cuts and installs using common woodworking and power tools, use weather resistant fasteners (stainless steel or hot dipped galvanized) when installing in applications where there will be exposure to moisture, use clear PVC adhesive in miter and scarf joints
Suitable for exterior and interior applications, can install direct to grade or masonry

General
Color/Finish Family	White	Use Location	Interior/Exterior
Finish	Finished	Installation Type	Finishing nails or brad nails
Manufacturer Color/Finish	White	Edge Profile	Notched
Type	Baseboard	Paint Grade	Yes
Material	PVC	Stain Grade	No
Style	Colonial	Pattern Number	WM623
Package Quantity	1	Joint Type	Solid

Dimensions
Actual Height (Inches)	3.25	Height Measurement	3-1/4-in
Actual Length (Feet)	8	Length Measurement	8-ft
Actual Thickness (Inches)	.5625	Thickness Measurement	9/16-in

Features
Finger-Joint	No	Pro Package	No
Flexible	No	Termite Resistant	Yes
Moisture Resistant	Yes	Can be Cut	Yes
Paintable/Stainable	Paintable	Rot Resistant	Yes

Certifications
CA Residents: Prop 65 Warning(s)	No

Warranty
Warranty	Limited lifetime

Miscellaneous
UNSPSC	30161900

Check out the Best Selling Baseboard Moulding on Lowes.com

Review

4.8 out of 5

158 Reviews

96% Recommend this product

Ratings may include incentivized customer reviews.

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+ 9

What Customers Are Saying

Customers overwhelmingly praise PVC baseboards for exceptional durability and moisture resistance, particularly in bathrooms and basements. Most highlight easy installation using standard tools and adhesive, with no priming or painting required. Reviewers consistently note the material resists rot, swelling, and mold even after years of exposure to water and humidity. Many appreciate the clean, wood-like appearance straight from the box and minimal maintenance needs. A few mention minor trimming may be needed for perfect fit, but this rarely detracts from overall satisfaction.

Customer review summary generated by AI, including incentivized reviews.

158 Customer Reviews

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Nice product

Would Recommend

Good product easy to install

PeteJuly 6, 2026
From 9_SLASH_16-in x 3-1_SLASH_4-in x 12-ft Colonial Finished PVC WM623 Baseboard Moulding Verified Purchaser

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Very durable.

Would Recommend

I love it. Premium PVC baseboard—durable, sleek, moisture-proof.

Claude CJune 24, 2026
Verified Purchaser

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PVC baseboards are the way go

Would Recommend

Excellent product. I love the fact that it’s waterproof, doesn’t need paint, and doesn’t need nails.

ShempJune 21, 2026
Verified Purchaser

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Works great no painting

Would Recommend

Easy to clean with a magic eraser

GatorJune 18, 2026
From 9_SLASH_16-in x 3-1_SLASH_4-in x 12-ft Colonial Finished PVC WM623 Baseboard Moulding Verified Purchaser

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COMPARE PRODUCTS

		Name	Current Item Royal Building Products9/16-in x 3-1/4-in x 8-ft Colonial Finished PVC WM623 Baseboard Moulding
		Ratings	157
		Material	PVC
		Finish	Finished
		Type	Baseboard
Royal Building Products11/16-in x 1-1/8-in x 8-ft Colonial Finished PVC 164 Base cap Moulding	RELIABILT9/16-in x 3-1/4-in x 8-ft Colonial Primed Finger Jointed Pine 623 Baseboard Moulding	RELIABILT1/2-in x 5-1/4-in x 8-ft Colonial Primed MDF 163E Baseboard Moulding	Royal Building Products1/2-in x 4-1/4-in x 8-ft Craftsman Unfinished PVC 9873 Baseboard Moulding	RELIABILT9/16-in x 3-1/4-in x 12-ft Colonial Primed Finger Jointed Pine 623 Baseboard Moulding	RELIABILT1/2-in x 5-1/4-in x 12-ft Colonial Primed MDF 163E Baseboard Moulding	Royal Building Products9/16-in x 3-1/4-in x 8-ft Craftsman Finished PVC 9972 Baseboard Moulding	Inteplast Group Building Products9/16-in x 3-15/16-in x 8-ft Traditional Finished Polystyrene Baseboard Moulding	Royal Building Products7/16-in x 3-1/4-in x 8-ft Colonial Unfinished PVC 5523 Baseboard Moulding
201	492	348	25	316	348	7	105	16
PVC	Wood	MDF	PVC	Wood	MDF	PVC	Polystyrene	PVC
Finished	Primed	Primed	Unfinished	Primed	Primed	Finished	Finished	Unfinished
Base cap	Baseboard	Baseboard	Baseboard	Baseboard	Baseboard	Baseboard	Baseboard	Baseboard